Feed attachment for pulp-wood barkers



3 Sheets-Sheet l.

Trb/ENTER Patented Oct. I8, |898.

d /mallllry A. O. LOMBARD.

FEED ATTACHMENT FOR PULP WOOD BARKEBS. (Apiulieacion ma mr. 27, 1897.) (N0 Model.)

- VVITNEEEES M QW 32.

N0. 6|2,6|l. Patented Oct. I8, |898.

' A. 0. LUMBARD.

FEED ATTACHMENT FRPULP WOOD BARKERS.

` (Application tiled Mar. 27, 1897.)

(N0 Model.) v 3 Sheets-Shelli 2.

"0.612,6". Patented Oct. I8, nasa.

A. o. LOMBARD. T FEED ATTACHMENT FUR PULP WOOD QARKERS.

(Application led Mar. 27, 1897.)

3 Sheets-Sheet'i.

Udo Model.) Y

IOl

' is acted upon by the cutters the machine can` UNITED STATES PATENT OEEICE.

ALVIN O. LOMBARD, 0F 'ATERVILLF., MAINE.

FE'ED ATTACHMEN'TjFOR PULP-WOOD BARKERS.

sPEemeA'rIoN forming part uf Letters Patent NQ. 612,611, dated october 1s, 189s.

Application filed March 27, 1897.

To all whom, it may concern:

lle it known that I, ALVIN O. LOMBARD, ofr lVaterville, in the county of Kennebec and State of Maine, have invented certain new and useful Improvements inI Feed Attachments for Pulp-food Barkers, of which the following is a full, clear, and exact description.

Heretofore in cutting and trimming off the bark of logs of- Wood for the purpose of using the Wood for paper-pulp, the., the logs when' presented Vto the cutters of the cutting-machine have been turned by hand to present all sides of the log to the cutters, but the result of such manipulation of the log is such that the trimming of the bark has been more or less irregular and uneven, and also more or less of the fiber of the wood next to the bark is apt to be cut away, which fiber is generally consideredthe best part of the log for use; and the object of this invention is to provide means vfor automatically pressing the log close againstthe cutters of the machine and at the same time turning it slowly, regularly, and gradually, so that the` bark will be cut evenly therefrom, so that when the bark has been all cutoff and before the Wood portion be stopped, and thus the cutting of the Wood be prevented; and the invention consists, in

a machine for cutting and trimming the bark from logs of wood, of mechanism suitably constructed and arranged to press the log vagainst the cutters and constantly turn the same to present new parts of the bark of the log to the cutters, all substantially as hereinafter fully described, reference being had to the accompanying sheets of drawings, in

which is illustrateda machine `for` cutting showing a login position to be operated upon, Y

with the parts comprising this invention in position for operation thereon.

In the accompanying sheets of drawings, A represents a casing having a base B and sup- Serial No. 629,602. (No model.)

porting a horizontal shaft C, carryinga disk D within the casing, on one side of which are arranged in the present instance four -eutt'ersE. v

On the shaft C is a tight pulley F anda loose pulley G, which are connected by aj belt (not shown) to any suitable driving power.

In the front `of the easing is an opening H opposite theV upper part ofthe line of movement of the cutters,and on two arms J, secured to the casing at a, is placed the log K to be cut tobe opposite to and in front of the opening II in the casing, so that it cali be conveniently pressed againstthe cutters as theyare revolved in operating the machine, the log being short enough to extend through the opening II. y

So far the machine is constructed and arranged for operation substantially as usual in machines for cutting and trimming the bark from logs of Wood.

L is a horizontal shaft above and parallel with the shaft C, adapted to turn in a bearing of the casing and a bearing fl, secured and supported by a horizontal arm M, secured to the casing at c. 0n the end of.this shaft L is a pinion-gear N, which engages 4with a worm-gear 1), secured to a horizontal shaft Q at right angles to the shaft L, turning-in bearings f in arms g, secured to the casing- On the outer end `of the shaft L is secured a series of pulleys R of different diameters, which are connected by a belt S to aseries of pulleys T on thc shaft C of different diameters in the reverse direction, so that by changing the belt from one to the other the shaft Q, through its Worm-gear connection with shaft L, will be turned with more orless speed correspondingly.

Secured to the shaft Q is a sprocket-Wheel U, over which runs a sprocket-chain V and' from it -to and over another sprocket-wheel W, the sprocket-wheel journals m turning freely in the outer ends of two arms Y, the inner ends of the arms freely fitting over the shaft Q, respectively, cach side of the sprocket-Wheel U and forming a journal on`- plate A' and B', respectively.

On one end of the shaft'Q on one side of arms Y is secured a friction-disk Cv by a pin r, and at the other end of the shaft on the y other side of the arms Y is another frictiondisk 1)', which is secured to the shaft by a spline-joint t, Fig. 1,.so it can move freely longitudinally on the shaft, but revolve with it. In an extension of the disk it has a circumferential groove E', in which is disposed the forked arms F of a horizontal cross-bar G', ypivoted at u to a support on the casing,

and connected to this bar G' at yv is a cord H', which runs to and over a pulley J', then down to and is connected at y1o to a' treadle K', pivoted at r to a lug a' of the base and projecting to the right for operation by the foot at b'.l Pushing down the treadle swings the bar G', which. moves thc disk D to and against the friction-disk B' of the arm Y and the arm for its friction-disk A to bear against the friction-disk C" on the other end of the shaft, the contacts and friction of 'which when the shaft Q is turned causes the arms carrying the toothed chain to swin'g over from its position shown in dotted lines to its position shown in full lines in Fig. 4. The shaft Q being turned revolves the sprocket-wheel U, carrying round the chain V, and if the treadle i is then pressed down by the .cord `lI-I' and bar be trimm-ed of the bark.

- the log has turned sufficiently for all the barkv connection it will move the friction-disk D,' against the friction-disk B' of the arms and ytheir other friction-disk A against the disk C', causing the arms Y to swing down with the endless chain running thereon, as described, the chain then by its teeth bearing against the log K in place on the machine to The friction of these disks causes the chain to be held with a certain amount of pressure against the log for its teeth or pins topress into the bark more or less to get a iirm hold upon the log, this pressure being graduated more or less by pressing down correspondingly uponl the treadle, which presses the friction-disks together correspondingly against the chain-supportingarm disks. As the chain is operated bearing against the log itl causes the log to revolveI slowly upon its supporting-arms against the cutters and causes new portions of the barksurface to be presented to the cutters, until to be cut 0E, when the machine is stopped and the chain allowed to rise freev of the log, sov the log can be taken away and another substituted.

To hold the chain and'itssupporting-frame up out of the way, as sho'wn in the dotted lines in Fig. 4, and to return it thereto when by its lother end is rigidly connected to the` edge of the friction-disk B' of the chain-supporting arms Y, as shown at g' inFig. 1. As the machine stops running the vtreadle K' is allowed to rise, releasing the friction-disks, when Weighted arm acts to raise the chain out of the way, as described.v Thus when the cutters are revolved by simply pressing down the treadle the vtoothed chain will be swung down and held to itsbearing upon the log for the turning of the same, for the purpose described.

Pivoted to lugs h' of the two arms Y is a small sprocket-wheel m', which engages with the inside of the sprocket-chaiuV between the sprocket-wheels U W' and is so arranged as to press outwardly the side of the sprocketchain which bears upon the log in operation to increase the pressure and the hold of the chain upon the log when operating to turn it, al1 as shown more particularly in Fig. 4. By

such an arrangement of mechanism for turn--` the wood' of 'the log itself to waste some of the best portions ofthe log.

By the chain bearing upon the periphery of u the log the surface yof the log is presented to the cutters at the same uniform speed irrespective of the diameter of the log that may be put in the machine. A

The/advantage of an endless chain with its projecting teeth for bearing and operating upon the log is of considerable importance in that it is more or less flexible or yielding asv it bears upon the log between its supports, its

exibility as it is pressed against the log insuring a lgnger bearing around the surface of the log, and thus getting a better hold IOO IIO

upon the log for its work than other devices,

which generally have a rigid bearing-surface, and that very small.

' Having thus described my invention,what I claim is v 1. In a machine for cutting and trimming the bark from a wood log, in combination, an endless chain adapted to run in-a suitable supporting-frame, teeth'or pins on the outside of the chain, the frame adapted to rock on a shaft, andhaving Afriction-disks, a frictiondisk secured to said shaft, another frictiondisk on said shaft adapted to move longitudinally thereon to bear respectively upon one friction-disk of the frame and force the other against the rigid disk on the shaft, and means for operating said movable disk.

2. In a machine for cutting and trimming the bark from a wood log, in combination, a rotating shaft, a sprocket-wheel secured on safd shaft,` two arms pivoted on said shaft, a In testimony whereof I have hereunto set sprocket-Wheel onthe outer ends of said arms, my hand in the presence of twosnbscribing 1o a chain connecting said sprocket-wheels, teeth Witnesses.

or pins on said chain a friction-disk on saidA shaft, a movable friction-disk on said shaft, ALVIN O' LOMBARD' friction-disks on said arm and means for mov- Witnesses:

, ing said movable friction-disk for the purpose J. F. PERCIVAL,

specified. n ERNEST E. DECKER. 

